Scarifying applicator



Sept. 30, 1952 A. w. BARRY 2,612,162

SCARIFYING APPLICATOR Filed May 15, 1950 FIG.I.

. INVENTORQ AARON W.BARRY ATTO NEYS Patented Sept. 30, 1952 v; 4 UNITED STATES e .Isuraorsliciz, 'l i 2,612,162. a f 4 scnairvme APPLICATOR" Aaron W.-:Barry,* Grosse Pointe Farms, Mich.

Application ma 15, 1950;.Srial 1313.57

G-CIai-mS. (Cl.

' The present inventionrelates to a sc'ariiying applicator, and more particularly to one which isadapted to contain "a liquid 'such as a'vaccin'e or serum to be applied through the skin."

'Iti's' an object of the present invention to provide a scarifying applicator comprising a containerfor the liquid tobe applied in combination with a scarifier relatively movable thereto and adapted upon such relative movement "to re lease liquid for'application to theiscarified zone;

More specifically, it is an object of the present inven'tionto providea scarifying applicator comprising 'a container, a scarifying applicator movable longitudinally of the container, and valve means associated therewith for releasing a substantially predetermined amount v of liquid upon movement .of the "scarifier relative to the container. 1

Other objects and features of the invention will'become apparent as the description proceeds', especially whent'aken' in. conjunction with the accompanying drawings, wherein:

Figure 1 is a side elevation of the scarifier in operating position. Figure 2 is an enlarged section throughthe scarifier and associated mechanism illustrating the scarifier implement in operative position. a

Figure 3 is a view similar to Figure 2 showing the scarifier inan intermediate position.

Figure *4 is an enlarged'fragmentary section through the operating end of the scarifying implement..

' Figure 5 is a bottom plan view of the end of the scarifying implement.

Figure 6 isa view similar to Figure 2 showing asecond embodiment of the invention.

Referring now to the drawings, the scarifying applicator comprises a'container lilwhich maybe an ordinary small glass bottle having a threaded neck [2. A screw cap 14 is provided having-a'central opening l6 therethrough. I

Located within the opening is a sleeve [8 having a radially outwardly extending flange 20-adapted to be clamped against the neck l2 of the bottle by the inwardly extending flange 22 of the cap. A suitable sealing gasket is indicated at 24. The sleeve l8 at its inner end has an inturned annular flange .or spring seat 26,- and adjacent its outerend it is inwardly tapered to provide a restricting flange 28.

Longitudinallvmovable within the sleeve [8 is a plunger 30 having an enlarged head 32 provided with a slot 34 for receiving one end of a coil compression spring 36. The slot'34 and the end of spring 36 received therein constitute means for preventing relative rotation between the 'plungertiland spring 36. The other "end of the compression'spring 364s engaged onthe springseat jzti." The convolutions'of the spring are closely adjacent to the inner wall of sleeve At its forwardend thehead 32 includesfa conically taperedportion 3! adapted to engage the "inner surface ofthe{ tapered portion or fiangefZBOf the sleeve. This tapered-portion serves the double function" of providing "a 'stop limiting outwardmovement of theplunger and also providing an'efiective sealagai-nst' the escape of liquid contained in-the bottle Ill. I

Outwardly from the "conicallytapered portion 31 the plunger has a first cylindrical portion 38, a reduced portion 40; andaseccnd cylindrical portion 42. At its extreme outer end the scarif'ying teeth 44 are provided; b

The coil compression spring 36 is freely rotatable withinthesleeve l8 when a force tending to-rotate the spring is applied in adirection to wind up the spring. However, when a force is applied tending to rotate the spring in the opposite direction the spring expands and frictionally 'grips'the inner surface of the sleeve. This results in preventing rotation of the scarifye ing element orplunger "in one direction while permitting its rotationin the'other direction.

Inward movement of-the plunger 30 is limited by the compression spring. I Preferably, the spring is so selected that when the :plunger has moved inwardly the-desired'amount, the convolutions of thespring' are in 'contact'and form a substantially rigidabutment.

'When the implement is applied to the skin and pressure is applied-thereto, the'plunger '30 moves" inwardly to the position illustrated in Figure 3. At this time it will be observed that the annular'reduced portion ill-of the plunger has clearance with respect'to the tapered open end of the sleeve [8, thus defining -'a passage '46'for' the escape of fluid. Further movement of the plunger inwardly moves the re'ducedportion (it inwardly-of theouter endof the restricting flange 28 and'brings the outer cylindrical portion 42 into'the end of the sleeve l8 and brings adjacent convolutionsof spring 36 into abutment, thus effectively sealing the o ening against the escapeof further liquid, and supporting the plunger for theapplicationofpres- "sureagainst' the skin of the patient.

vided with a conical recess 50. Outwardly from the conical recess beveled teeth 52 are provided which intercept the central conical recess 50 to provide the sharp points indicated at 54. As pressure is applied to the scarifler the pointed teeth 54 first engage the skin. As more pressure is applied the skin is forced upwardly into the conical recess 50, thus causing the skin to be drawn radially inwardly over the points 54. At the same time the bottle is rotated and this rotation is imparted to the plunger 30 thus causing the pointed teeth to move in a circular arc. The operation as above described scarifies the skin and permits the serum or vaccine released during the operation to be effective.

Referring now to Figure 6 there is illustrated a somewhat different embodiment of the present invention. In this case the construction is the same except that the sleeve 60 is provided with a cross pin 62 extending into a slot 64 located in the upper end of the plunger 66. Thus rotation of the sleeve 60 in either direction will result in corresponding rotation of the scarifier. At the same time the plunger 60 is provided with pins or similar elements 68 against which the compression spring 70 engages to urge the plunger to its normal outward position.

The drawings and the foregoing specification constitute a description of the improved scarifying applicator in such full, clear, concise and exact terms as to enable any person skilled in the art to practice the invention, the scope of which is indicated by the appended claims.

What I claim as my invention is:

1. A scarifying applicator comprising a container, an apertured cap therefor, a sleeve extending through said cap and having a radially extending flange to be clamped against the container by said cap, said sleeve having an annular spring seat at its inner end and an inwardly tapered outer end, a headed plunger in said sleeve, the head of said plunger seating against the tapered end of said sleeve, the inner end of said plunger having a slot therein, a compression spring on said seat having one end received in said slot, said plunger having a generally cylindrical body normally closing the outer end of said sleeve, and a reduced portion intermediate its ends having clearance with the outer end of said sleeve upon motion of said plunger inwardly of said sleeve, and scarifying teeth on the outer end of said plunger.

, 2. A scarifying applicator comprising a container, an apertured closure for said container, said closure includinga tubular sleeve having an inwardly extending restricting flange at its outer end and a spring seat located inwardly from its outer end, a plunger slidable in said tubular sleeve and having a headed inner end adapted to engage the restricting flange to limit outward movement of said plunger, said. plunger having a cylindrical shank dimensioned to fit tightly within said restricting flange to seal said tubular sleeve, an annular reduced portion intermediate the ends of said shank permitting flow 0f fluid out of said container when in registry with said restricting flange, the outer end of said plunger comprising scarifying elements thereon operable by pressure axially of said plunger and by rotation of said plunger, a coil spring in said tubular sleeve having one end on said spring seat and its other end engaging said plunger, means preventing relative rotation between said plunger and the end of said spring in engagement therewith, the convolutions of said spring being'closely adjacent to the inner wall of said tubular sleeve, the end of said spring on said spring seat being in frictional engagement therewith, whereby initial rotation of said plunger in a direction to unwind said spring expands said spring laterally into tight frictional engagement with said wall and thereby locks said plunger against further rotation.

3. A scarifying applicator comprising a container, an apertured closure for said container, said closure including a tubular sleeve having an inwardly extending restricting flange at its outer end and a spring seat located inwardly from its outer end, a plunger slidable in said tubular sleeve and having a headed inner end adapted to engage the restricting flange to limit outward movement of said plunger, said plunger having a cylindrical shank dimensioned to fit tightly within said restricting flange to seal said tubular sleeve, an annular reduced portion intermediate the ends of said shank permitting flow of fluid out of said container when in registry with said restricting flange, the outer end of said plunger comprising scarifying elements thereon operable by pressure axially of said plunger and by rotation of said plunger, a coil spring in said tubular sleeve having one end on said spring seat and its other end engaging said plunger, means preventing relative rotation between said plunger and the end of said spring in engagement therewith, the convolutions of said spring being closely adjacent to the inner wall of said tubular sleeve, the end of said spring on said spring seat being in frictional engagement therewith, whereby initial rotation of said plunger in a directionto unwind said spring expands said spring laterally into tight frictional engagement with said wall and thereby locks said lunger against further rotation, the convolutions of said spring being spaced apart a distance such that inward movement of said plunger to a position where its annular reduced portion is located inwardly of said restricting flange causes adjacent convolutions to abut to provide a substantially rigidabutment preventing further inward movement of said plunger.

4. In apparatus of the character described, a-

sleeve having a first inwardly extending flange at its inner end forming a spring seat, a cylindrical intermediate portion, and a second inwardly extending flange at its outer end forming a plunger guide, a plunger having a cylindrical shank fitting closely within said guide and having a head at its inner end within said sleeve engageable with said second flange to limit movement of said plunger outwardly from said sleeve, a reduced portion intermediate the ends of said shank defining a fluid flow passage with said second flange when in registry therewith, a cylindrical coiled spring in said sleeve having its inner end seated in frictional contact on said spring seat and its outer end engaging the inner end of said plunger, means preventing relative rotation between said plunger and the outer end of said spring, the convolutions of said spring being closely adjacent to the inner wall of said sleeve whereby expansion of the spring due to rotation of said plunger in a direction to unwind the spring causes the spring to look by friction against the inner wall of said sleeve.

5. In apparatus of the character described, a sleeve having a first inwardly extending flange at ts inner end formin a spring seat, a cylindrical intermediate portion, and a second inwardly extending flange at its outer end forming a plunger guide, a plunger having a cylindrical shank fitat its inner end within said sleeve engageable with said second flange to limit movement of said plunger outwardly from said sleeve, a reduced portion intermediate the ends of said shank defining a fluid flow passage with said second flange when in registry therewith, a cylindrical coiled spring-in said sleeve having its inner end seated in frictional contact on said spring seat and its outer end engagin the inner end of said plunger, means preventing relative rotation between said plunger and the outer end of said spring, the convolutions of said spring being spaced apart a distance such that adjacent convolutions abut upon inward movement of said plunger an ing a plunger guide, a plunger having a cylindrical shank fitting closely within said guide and having a head at its inner end within said sleeve engageable with said second flange to limit movement of said plunger outwardly from said sleeve, a reduced portion intermediate the ends of said shank defining a fluid flow passage with said second flange when in registry therewith, a cylindrical coiled spring in said sleeve having its inner ting closely within said guide and having a head 7 end seated in frictional contact on said spring seat and its outer end engagin the inner end of said plunger, means preventing relative rotation between said plunger and the outer end of said spring, the convolutions of said spring being closely adjacent to the inner wall of said sleeve. whereby expansion of the spring due to rotation of said plunger in a direction to unwind the spring causes the spring to lock by friction against the inner wall of said sleeve, the convolutions of said spring being spaced apart a distance such that adjacent convolutions abut upon inward movement of said plunger an amount suflicient to cause the reduced portion of its shank to move inwardly beyond said second flange.

AARON W. BARRY.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 273,702 Bennett Mar. 13, 1883 693,554 Langstaff Feb. 18, 1902 995,340 Garnet June 13, 1911 1,020,758 Hillyard Mar. 19, 1912 1,208,784 Holmes Dec. 19, 1916 1,230,916 Mason June 26, 1917 1,746,727 Dunlap Feb. 11, 1930 2,126,358 Townsend Aug. 9, 1938 2,140,409 Sterling Dec. 13, 1938 2,437,920 Overton Mar. 16, 1948 

